Thank you all for your insight and helpful replies. I am pretty much resigned to using the dozen or so 155 Palmas for fouling shots and staying with the heavier weight bullets. Just as an experiment, I am going to load the last 12 Palmas as close as I can get to the rifling and see if it makes any difference. I am thinking that it might. My mid range load may well be the standard 155 MK or better yet, the 175 which gets really nice groups for as far as I have tested them.